阅读说明：本技术 一种穿刺定位针结构 (Puncture positioning needle structure ) 是由 刘明欣 唐华松 于 2020-05-28 设计创作，主要内容包括：本发明涉及一种穿刺定位针结构,其包括握持管、针管以及定位导丝,所述定位导丝能够穿过针管的内腔,所述定位导丝包括定位件以及易剪断的拉动件；所述定位件与拉动件之间设置有连接件,所述连接件的两端分别固接于定位件与拉动件的相对端；所述针管内沿其轴向滑移连接有推动管,所述推动管套接于拉动件,所述推动管靠近定位件的一端抵接于连接件远离定位件的一端,另一端凸出握持管远离针管的一端设置。本发明在剪断定位导丝时,能够降低对人体组织造成创伤的可能性。(The invention relates to a puncture positioning needle structure which comprises a holding tube, a needle tube and a positioning guide wire, wherein the positioning guide wire can penetrate through an inner cavity of the needle tube and comprises a positioning part and a pulling part which is easy to cut off; a connecting piece is arranged between the positioning piece and the pulling piece, and two ends of the connecting piece are respectively and fixedly connected with the opposite ends of the positioning piece and the pulling piece; the needle tube is connected with a pushing tube in a sliding mode along the axial direction of the needle tube, the pushing tube is sleeved on a pulling piece, one end, close to the positioning piece, of the pushing tube abuts against one end, far away from the positioning piece, of the connecting piece, and the other end of the pushing tube protrudes out of one end, far away from the needle tube, of the holding tube. When the positioning guide wire is cut off, the possibility of causing wound to human tissue can be reduced.)

1. The utility model provides a puncture positioning needle structure, includes and grips pipe (1), needle tubing (2) and location seal wire (3), its characterized in that: the positioning guide wire (3) can penetrate through the inner cavity of the needle tube (2), and the positioning guide wire (3) comprises a positioning part (31) and a pulling part (32) which is easy to cut; a connecting piece (33) is arranged between the positioning piece (31) and the pulling piece (32), and two ends of the connecting piece (33) are fixedly connected to the opposite ends of the positioning piece (31) and the pulling piece (32) respectively; it is connected with thrust tube (4) to slide along its axial in needle tubing (2), thrust tube (4) cup joint in pulling piece (32), thrust tube (4) are close to the one end butt of setting element (31) and keep away from the one end of setting element (31) in connecting piece (33), and the one end setting of needle tubing (2) is kept away from in other end protrusion gripping pipe (1).

2. A puncture positioning needle structure according to claim 1, wherein: the pulling piece (32) is made of nylon wires.

3. A puncture positioning needle structure according to claim 1, wherein: the positioning piece (31) is made of nickel-titanium alloy material.

4. A puncture positioning needle structure according to claim 3, wherein: one end of the positioning piece (31) far away from the pulling piece (32) is in a ring shape.

5. A puncture positioning needle structure according to claim 1, wherein: the connecting piece (33) is a metal pipe, and the pulling piece (32) is riveted with the connecting piece (33).

6. A puncture positioning needle structure according to claim 5, wherein: the connecting piece (33) is made of 304 stainless steel material.

7. A puncture positioning needle structure according to claim 1, wherein: the outer side wall of the connecting piece (33) is provided with a spiral groove (331).

Technical Field

The invention relates to the technical field of medical instruments, in particular to a puncture positioning needle structure.

Background

Pulmonary nodules are isolated, round-like lesions in the lung with a diameter less than 2cm, with no pulmonary inflammation and enlargement of regional lymph nodes. In recent years, more and more patients with pulmonary nodules have difficulty in early diagnosis of pulmonary nodules, lack of specificity in clinic, are various in morphology on imaging, are difficult to judge whether benign or malignant, and often cause misdiagnosis to delay treatment. The clinical treatment of surgical operation on the patients has better effect. In the surgical operation process, the pulmonary nodule resection under the thoracoscope is mostly adopted, and the accurate positioning of the position of the nodule often becomes the key of success or failure of the operation, so that the positioning and puncture under the guidance of preoperative ultrasound is very important.

In the prior art, reference may be made to chinese patent application with publication No. CN108451599A, which discloses an improved pulmonary nodule puncture needle kit, including a puncture needle with an inner hole and a positioning guide wire penetrating through the inner hole of the puncture needle, a positioning end of the positioning guide wire is provided with a V-shaped barb, the end of the positioning guide wire opposite to the positioning end is a pushing end, a reinforcing portion is disposed at a position of the positioning guide wire close to the positioning end, a bending portion with a memory function is disposed at a position of the positioning guide wire close to the positioning end, the bending portion deforms into a straight line when the positioning guide wire is inserted into the inner hole of the puncture needle, and returns to a bent shape after the positioning guide wire leaves the inner hole of the puncture needle. According to the invention, the focus is hooked by the V-shaped barb at the positioning end of the positioning guide wire, and after the puncture needle is pulled out, the V-shaped barb on the positioning guide wire is matched with the bending part, so that the positioning guide wire is prevented from moving forwards and backwards, and the possibility that the positioning guide wire is separated from the focus and retracts into the chest wall or slides into the mediastinum is avoided.

The above prior art solutions have the following drawbacks: when the operation is needed to be performed on a human body, the puncture needle needs to be taken down, then the positioning guide wire is cut off, and only the positioning end of the positioning guide wire is left at the position of the tissue to be cut, so that the operation can be performed under the ultrasonic guidance; however, the positioning guide wire is generally a metal wire, and when the positioning guide wire is cut, there is a possibility that a wound may be caused to a human tissue.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a puncture positioning needle structure which can reduce the possibility of causing trauma to human tissues when a positioning guide wire is cut off.

The above object of the present invention is achieved by the following technical solutions:

a puncture positioning needle structure comprises a holding tube, a needle tube and a positioning guide wire, wherein the positioning guide wire can penetrate through an inner cavity of the needle tube and comprises a positioning part and a pulling part which is easy to cut off; a connecting piece is arranged between the positioning piece and the pulling piece, and two ends of the connecting piece are respectively and fixedly connected with the opposite ends of the positioning piece and the pulling piece; the needle tube is connected with a pushing tube in a sliding mode along the axial direction of the needle tube, the pushing tube is sleeved on a pulling piece, one end, close to the positioning piece, of the pushing tube abuts against one end, far away from the positioning piece, of the connecting piece, and the other end of the pushing tube protrudes out of one end, far away from the needle tube, of the holding tube.

By adopting the technical scheme, when the tissue to be cut needs to be positioned, the needle tube is firstly inserted into the body under the ultrasonic guidance, and then the connecting piece and the positioning piece are pushed to the tissue to be cut of the human body through the pushing tube, so that the tissue to be cut can be positioned; when the tissue to be cut needs to be cut, the pulling piece is firstly cut off by the surgical scissors, then the needle tube is communicated with the pushing tube and pulled out, and then the operation can be carried out; in summary, since the pulling member is easily cut, the possibility of causing a wound to a human tissue can be reduced when the positioning guide wire is cut. Through setting up the connecting piece, be convenient for push away the setting element to human tissue department of pending location.

The present invention in a preferred example may be further configured to: the pulling piece is made of nylon wire.

By adopting the technical scheme, on one hand, nylon is easy to cut off, on the other hand, nylon has high mechanical strength, high softening point, heat resistance, low friction coefficient, wear resistance, self-lubricity, shock absorption and noise reduction, oil resistance, weak acid resistance, alkali resistance and common solvents, and has the advantages of good electrical insulation, self-extinguishing property, no toxicity, no odor, good weather resistance and poor dyeing property.

The present invention in a preferred example may be further configured to: the positioning piece is made of nickel-titanium alloy material.

By adopting the technical scheme, the nickel-titanium alloy has a memory function, so that the positioning piece can be in a certain specific shape after being unfolded.

The present invention in a preferred example may be further configured to: one end of the positioning piece, which is far away from the pulling piece, is in a ring shape.

Through adopting above-mentioned technical scheme, under the ultrasonic guidance, can increase the development area of setting element.

The present invention in a preferred example may be further configured to: the connecting piece is a metal pipe, and the pulling piece is riveted with the connecting piece.

Through adopting above-mentioned technical scheme, when needs make connecting piece and pull the piece riveting, pull the piece through removing and make the inner chamber grafting of pulling piece and connecting piece, then make the connecting piece and the junction that pulls the piece take place to deform through the instrument to alright make connecting piece and pull the riveting.

The present invention in a preferred example may be further configured to: the connecting piece is made of 304 stainless steel materials.

By adopting the technical scheme, the 304 stainless steel has the characteristics of high temperature resistance, good processing performance and high toughness, so that the positioning piece is conveniently driven to enter tissues to be positioned of a human body.

The present invention in a preferred example may be further configured to: the outer side wall of the connecting piece is provided with a spiral groove.

Through adopting above-mentioned technical scheme, under the supersound guide, through setting up the helicla flute, can increase the development area of connecting piece.

In summary, the invention includes at least one of the following beneficial technical effects:

1. when the tissue to be cut needs to be positioned, the needle tube is inserted into the body under the ultrasonic guidance, and then the connecting piece and the positioning piece are pushed to the tissue to be cut of the human body through the pushing tube, so that the tissue to be cut can be positioned; when the tissue to be cut needs to be cut, the pulling piece is firstly cut off by the surgical scissors, then the needle tube is communicated with the pushing tube and pulled out, and then the operation can be carried out; in conclusion, the pulling piece is easy to cut, so that the possibility of causing wound to human tissues can be reduced when the positioning guide wire is cut; the positioning piece is convenient to push to the position of the human tissue to be positioned by arranging the connecting piece;

2. when the connecting piece needs to be riveted with the pulling piece, the pulling piece is moved to be inserted into the inner cavity of the connecting piece, and then the connecting part of the connecting piece and the pulling piece is deformed through a tool, so that the connecting piece and the pulling piece can be riveted;

3. under the ultrasonic guidance, the developing area of the connecting piece can be increased by arranging the spiral groove.

Drawings

FIG. 1 is a schematic view of the embodiment of the drawing component for highlighting

FIG. 2 is a schematic view showing a spiral groove in an embodiment;

FIG. 3 is a schematic view showing the structure of a push pipe and a connector according to the embodiment.

In the figure, 1, a tube is held; 2. a needle tube; 3. positioning a guide wire; 31. a positioning member; 311. a bevel; 32. a pulling member; 33. a connecting member; 331. a helical groove; 4. pushing the tube.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

As shown in fig. 1 and fig. 2, a puncture positioning needle structure disclosed by the present invention includes a holding tube 1, a needle tube 2 and a positioning guide wire 3, the structure of the holding tube 1 is relatively conventional, and details are not repeated here, the needle tube 2 is fixedly connected with the holding tube 1, an inner cavity of the needle tube 2 is communicated with an inner cavity of the holding tube 1, the positioning guide wire 3 can pass through the inner cavity of the needle tube 2, and the positioning guide wire 3 includes a positioning element 31 and a pulling element 32 which is easy to cut; the positioning piece 31 is conveniently pulled into the needle tube 2 by arranging the pulling piece 32; a connecting piece 33 is arranged between the positioning piece 31 and the pulling piece 32, and two ends of the connecting piece 33 are respectively and fixedly connected with the opposite ends of the positioning piece 31 and the pulling piece 32; the positioning piece 31 and the connecting piece 33 can be fixedly connected by welding or riveting, and one end of the positioning piece 31, which is far away from the connecting piece 33, is provided with an inclined surface 311, so that one end of the positioning piece 31, which is far away from the connecting piece 33, can be conveniently inserted into the human tissue to be positioned; referring to fig. 3, it is connected with the push tube 4 to slide along its axial in the needle tubing 2, the material of push tube 4 can select for use stainless steel material, push tube 4 is difficult for the corrosion like this, push tube 4 cup joints in pulling piece 32, the one end butt that push tube 4 is close to setting element 31 keeps away from the one end of setting element 31 in connecting piece 33, the other end protrusion is held the one end setting that pipe 1 kept away from needle tubing 2, through setting up push tube 4, be convenient for push connecting piece 33 and setting element 31 to human tissue department of undetermining.

As shown in fig. 2 and 3, the pulling member 32 is made of nylon, but the material of the pulling member 32 may be biocompatible, which facilitates shearing of the pulling member 32. The connecting piece 33 is a metal tube, and the pulling piece 32 is riveted with the connecting piece 33; when the connecting piece 33 needs to be riveted with the pulling piece 32, the pulling piece 32 is moved to enable the pulling piece 32 to be inserted into the inner cavity of the connecting piece 33, and then the connecting part of the connecting piece 33 and the pulling piece 32 is deformed through a tool, so that the connecting piece 33 and the pulling piece 32 can be riveted.

As shown in fig. 2 and 3, the positioning member 31 is made of a nickel titanium alloy material, and the nickel titanium alloy has a memory function, so that the positioning member 31 can be unfolded to take a specific shape. The end of the positioning element 31 away from the pulling element 32 is in a ring shape, and the end of the positioning element 31 away from the pulling element 32 is not limited to be in a ring shape, and may be in a hook shape or other shapes capable of increasing the developing area.

As shown in fig. 2 and 3, the connection member 33 is made of 304 stainless steel material, so that the connection member 33 is not easily rusted, the outer side wall of the connection member 33 is provided with a spiral groove 331, and by providing the spiral groove 331, the development area of the connection member 33 can be increased.

The invention can be carried out under the guidance of X-ray, ultrasound and CT.

The implementation principle of the embodiment is as follows: when the tissue to be cut needs to be positioned, the needle tube 2 is firstly inserted into the body under the ultrasonic guidance, and then the connecting piece 33 and the positioning piece 31 are pushed to the tissue to be cut of the human body through the pushing tube 4, so that the tissue to be cut can be positioned; when the tissue to be cut needs to be cut, the pulling part 32 is firstly cut off by surgical scissors, then the needle tube 2 is communicated with the pushing tube 4 to be pulled out, and then the operation can be carried out; in summary, since the pulling member 32 is easily cut, the possibility of injury to human tissue can be reduced when the positioning guide wire 3 is cut.

The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.